Hydraulic swivel



L. J. BLACK.-

HYDRAULIC SWIVEL.

APPLICATION FILED APR-'8, 1921.

Patented Mar. 7, 1922.

' zen of the United 372,266 hereinbefore UNITED STATES PATENT OFFICE.

LEE J'. BLACK, 01 BEAUMONT, TEXAS.

HYDRAULIC SWIVEL.

To all whom 2'25 may concern:

Be it known that I, LEE J. BLACK, a citi- States, residing at Beaumont, in the countyof Jefferson and State of exas, have invented certain new and useful Improvements in Hydraulic Swivels, of whichthe following is a specification.

This invention relates to hydraulic swivels used with rotary well drilling machines for making a water-supply connection with the drill stem. g The present device is an improvement over the one disclosedin Patent No. 1,372,-

266, issued March 22, 1921, and the object s to simplify thestructure, and also to render the device more efficient and reliable in operation.

arrangement of parts to be hereinafter deand in order that the same may be better understood, reference is had to the accompanying drawing forming a part of this specification.

In. the drawing,

Figure 1 is an elevation of the device, partly in section; F 2 and 3 are elevations slightly enlarged, oi a water-head as viewed from different sides, and Fig. 4 is a plan. view of the water-head.

eierring specifically to the drawing, 5 denotes a swivel stem which passes through and is supported by the swivelcross-head 6, is carried, as usual, by a bail 7 to which the draw-cable (not shown) is connected.

In the cross-head 6 is a cavity 8, the same extending downwardly thereinto from the top, and containing the bearing collar 9 and other parts disclosed in the Patent No. 1,-

ret'erred to, said collar having a screw-threaded connection with the swivel stem 5 and being locked on the latter by a lock nut 10.

The upper portion of the cavity 8 is screwthreaded to seat the base ring 11 of a waterhead, the body 12 of the latter being integrally connected to the base ring by diametrically opposite webs 13. The base ring is exteriorly threaded so that it may be screwed into the upper end of the cavity 8, and in this manner the water-head is rigidly, but detachably connected to the crosshead 6, and is formed below its body portion with an open portion.

The upper end of the swivel stem 5 passes Specification of Letters Patent.

the bod the base ring 1105 the Patented Mar. 7, 1922. 1921. Serial No. 459,684.

through the ring 11 and it is connected to y 12 to open thereinto. The swivel stem is, of course tubular, and as its upper end, which extends into the body 12, is the water discharged into the latter is permitted to flow into the swivel stem. top of the body 12 is connected a goose-neck 14 to which the water supply hose is 'connected, a fragment of the latter being shown A stuffing box is provided in order to prevent leakage of water from the body 12 where they swivel stem 5 enters the same. Thisstuiiing box is shown at 15, it being with a screw follower 17, a packing 18, and a brass ring of the stuffing box.

In order to prevent leakage of oil from the cavity 8 where the stem 5 passes through ater-head 12, said ring is also fitted with a stuiiing box 20 through which the stem passes, said stufiing box being also provided with a screw cap, packing, etc., the same as the stuiiing box 15. The webs 13 joining the ring 11 and body 12 leave the stuffing boxes 15 and 20 exposed so that they are readily accessible for repacking, tightening of the screw caps, etc.

The direct connection of the water head 12 with the the anti-friction bearings employed in connection with the water-head disclosed in Patent No. 1,372,266 hereinbefore referred to. The cross head 6 usually stands still and as it carries the water head 12, the latter is also stationary. The stem 5 revolves inside the stufling boxes 15 and 20, and as the latter are held centered with respect to the bearing in the cross-head which supports the stem, there is no side thrust to take care of.

I claim:

1. In a hydraulic swivel, a swivel stem, :1 cross-head through which the swivel stem passes, and from the top of which said stein projects, said cross-head having a cavity opening through the top thereof, hearings in said cavity for the swivel stem, a water head having a base ring and webs integrally connecting said head and ring, the base ring being secured in the aforesaid cavity of the cross-head, the swivel stem passing through cap 16 for holding a gland or I cross-head 6 renders unnecessary aforesaid webs. V

3. In a hydraulic swivel, a swivel stem, a cross-head, the swlvel stem passing through j base ring and spaced webs integrally connecting said body portion and base ring,

' means for connecting 2-. Inahydraulic swivel, a swivel stem, cross-head supporting the swivelstem and from the top of which said stem projects, a water-head comprising a body portion, a

base ring and spaced webs integrally connectingsaid body portion and base ring, means for connecting the base ring to. the cross-head, the swivel stem passing through the base ring and into the body portion of the water-head, the latter having a supply connectionand an outlet into the stem, and the swivel stein carried by the base ring and the body portion of the water-head, said stuffing boxes being exposed for access through the spaces between the cross-head supporting the swivel stem and from the top of which said stem projects, a water-head comprising a body portion, a

cross-head, the swivel stem passing through the base ring and into the body portion of the water-head, the latter having a supply connection and an outlet into thestem, and

and stuffing boxes 7 cross-head supporting the swivel stem 'on the open the base ring to the a stuffing box for the swivel stem carried by the body portion of the water-head, said stuiiing box being exposed for access through the spaces between the aforesaid webs.

l. In a hydraulic swivel, a swivel stem, a swivel stem and from the top of which said stem projects, a. water-head comprising a body portion and an open portionwhich is connected tothe cross-head,wthe swivel stem passing through said open portion and into the body portion, the latter having a supply connection and an outlet into the stem, and a stufiing box for the swivel stem carried by the body portion of the water-head, and exposed for access through the open portion of the'waterhead. a

5. In afhydra'ulic swivel, a swivel stem, a cross-head supporting the swivel stemv and from the top of which said stem projects,

a water-head comprising a bodyportion and an open portion which is connected to the said open portion and into the body portion, the latter having a supply connectionand an outlet into the stem, stuffing boxes for the portion and the body portion of the water-head, and exposed for access through said open portion.

In testimony whereof'I afiix my signature.

LEE J. BLACK. 

